nadia has taken 3 exams and her average score so far is 80.If she gets 100,a perfect score on the remaining 2 exams what will her new average be ?
[(3 * 80) + 200] / 5 = ?
Right.
280
88.
[(3*80)+200]/5=88
To find Nadia's new average, we need to consider her current average and the scores she will get on the remaining exams.
First, let's calculate her current total score. We know that her average for the first 3 exams is 80. So, the total score from the first 3 exams is 3 * 80 = 240.
Now, let's factor in the scores from the remaining 2 exams. If Nadia gets perfect scores, she will get a total of 2 * 100 = 200.
To calculate her new average, we need to take the total score from all the exams (including the remaining 2 exams) and divide it by the total number of exams she has taken.
The total score from all the exams is 240 (from the first 3 exams) plus 200 (from the remaining 2 exams), which gives us a total score of 440.
Since she has taken 3 exams initially and will take 2 more, her total number of exams becomes 3 + 2 = 5.
Finally, we divide the total score (440) by the number of exams (5) to find the new average score.
New average score = total score / number of exams
= 440 / 5
= 88
Therefore, Nadia's new average score, if she gets a perfect score on the remaining 2 exams, will be 88.